Python Program to Check If a Number is a Harshad Number

Last Updated : 15 Apr, 2024

Harshad Numbers can be divided by the sum of its digits. They are also called Niven Numbers. For instance, 18 is a Harshad Number as it can be divided by 9, the sum of its digits (8+1=9). In this article, we will discuss various approaches to determine whether the given number is a Harshad Number in Python.

Example:

Input: 18 Output: 18 is a Harshad Number  Input: 15 Output: 15 is not a Harshad Number

Python Program to Check If a Number is a Harshad Number

Below are some of the approaches by which we can check if a number is a Harshad Number using Python:

Using Loop
Using String

Using Loop

In this example, the checkHarshad function examines whether a number is a Harshad number by verifying if the sum of its digits is divisible by the number itself. If it is, it returns "Yes"; otherwise, it returns "No".

Python3

def checkHarshad(n):     sum = 0     temp = n     while temp > 0:         sum = sum + temp % 10         temp = temp // 10      # Return true if sum of digits is multiple of n     return n % sum == 0  if(checkHarshad(12)):     print("Yes") else:     print("No")  if (checkHarshad(15)):     print("Yes") else:     print("No")

Output

Yes No

Using String

In this example, we are using str() function to check if a number is a Harshad Number or not.

Python3

def checkHarshad(n):     # Converting integer to string     st = str(n)     sum = 0     length = len(st)      for i in st:         sum = sum + int(i)      # Comparing number and sum     if (n % sum == 0):         return "Yes"     else:         return "No"  number = 18 print(checkHarshad(number))  number = 15 print(checkHarshad(number))